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United States Patent | 6,231,049 |
Ridgway | May 15, 2001 |
A composite gasket comprising a metal flange having graphite sealing surfaces overlaid thereon, has load stabilizing ribs formed in the metal flange in the parallel sides not having bolt holes therein. The ribs provide a more even load distribution in the graphite sealing surfaces such that a more efficient and longer lasting seal is provided, particularly in mis-designed or misapplied applications.
Inventors: | Ridgway; Robert K. (Cedar Rapids, IA) |
Assignee: | Master Packing & Rubber Company (Cedar Rapids, IA) |
Appl. No.: | 711076 |
Filed: | September 9, 1996 |
Current U.S. Class: | 277/595; 277/594 |
Intern'l Class: | F02F 011/00 |
Field of Search: | 277/592,593,594,595,639,627,638,652,FOR 248 285/910,917 |
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4140323 | Feb., 1979 | Jacobs | 277/180. |
4325559 | Apr., 1982 | Czernik et al. | 277/592. |
4351534 | Sep., 1982 | McDowell | 277/592. |
4397472 | Aug., 1983 | Czernik | 277/180. |
4471968 | Sep., 1984 | Schlaupitz | 277/235. |
4721315 | Jan., 1988 | Ueta | 277/595. |
4743421 | May., 1988 | McDowell et al. | 264/129. |
4830698 | May., 1989 | DeCore et al. | 277/235. |
4861046 | Aug., 1989 | Udagawa | 277/235. |
5092613 | Mar., 1992 | Udagawa | 277/235. |
5149110 | Sep., 1992 | Inamura | 277/235. |
5150910 | Sep., 1992 | Udagawa | 277/235. |
5280928 | Jan., 1994 | Ueta et al. | 277/595. |
5421594 | Jun., 1995 | Becerra | 277/235. |
5431418 | Jul., 1995 | Hagiwara et al. | 277/592. |
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Foreign Patent Documents | |||
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58-200860 | Nov., 1983 | JP | 277/FOR. |
0125461 | Jul., 1985 | JP | 277/235. |
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1079471 | Mar., 1989 | JP | 277/FOR. |
3134376 | Jun., 1991 | JP | 277/FOR. |